Rotational Motion · Moment of inertia
A circular disc has radius and thickness . Another circular disc made of the same material has radius and thickness . If the moments of inertia of both discs are same and then . The value of is .
We corrected a printing error in the original paper
Source printed “the moment of inertia of both discs are same”.
Video solution coming soon
We're animating every PYQ step by step. Subscribe to get them first.
See the full 22 Jan 2026, Shift 1 paper
More on Moment of inertia
- 21 Jan 2026, Shift 1 · Q23Two identical thin rods of mass M kg and length L m are connected as shown in figure. Moment of inertia of the combined rod system about…
- 22 Jan 2026, Shift 1 · Q1A solid sphere of mass 5 kg and radius 10 cm is kept in contact with another solid sphere of mass 10 kg and radius 20 cm. The moment of…
- 23 Jan 2026, Shift 1 · Q8The moment of inertia of a square loop made of four uniform solid cylinders, each having radius R and length L (R < L) about an axis…
- 23 Jan 2026, Shift 2 · Q24Suppose there is a uniform circular disc of mass M kg and radius r m shown in figure. The shaded regions are cut out from the disc. The…